Infineon Technologies BCR 119T E6327

Overview

BCR 119T E6327 from Infineon Technologies is an NPN silicon digital transistor with integrated base resistor (R1 = 4.7 kΩ), designed for switching, inverter, interface, and driver circuits. It features V_CEO = 50 V, I_E = 100 mA, V_CE(sat) ≤ 0.3 V at I_C = 10 mA / I_B = 0.5 mA, and h_FE = 120–630, commonly used in low-power logic-level signal translation and LED driver stages.

For engineers reviewing the BCR 119T E6327 datasheet, BCR 119T E6327 pinout, BCR 119T E6327 application, or BCR 119T E6327 equivalent, key selection criteria include built-in biasing resistor value, SOT-23 package thermal resistance (R_thJS ≤ 165 K/W), DC current gain range, saturation voltage under defined drive conditions, and maximum junction temperature of 150 °C.

Technical Context

This device integrates a single NPN transistor with monolithically embedded base resistor R1 (typ. 4.7 kΩ) to simplify external bias network design. It operates in common-emitter configuration with guaranteed V_(BR)CEO ≥ 50 V and V_(BR)EBO ≥ 5 V, supporting reliable switching up to 100 mA emitter current.

The SOT-23 package enables surface-mount integration in space-constrained digital interface nodes. Thermal performance is characterized by R_thJS ≤ 165 K/W and P_tot = 250 mW at T_S ≤ 109 °C, allowing stable operation in ambient temperatures up to 85 °C with appropriate PCB copper area.

Key Specifications

Pinout & Package

BCR 119T E6327 is housed in a standard SOT-23 (SC-59) plastic surface-mount package, measuring 2.9 mm × 1.3 mm × 1.0 mm, with gull-wing leads optimized for reflow soldering and automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital transistor applications.

Compared with BC847B,115 and MMBT3904LT1G, BCR 119T E6327 reduces component count and layout complexity in fixed-threshold digital switching, trades off bias flexibility for integration density and production consistency.

Availability

BCR 119T E6327 is available at Aetrix Electronics and suitable for LED driver stages, microcontroller GPIO expansion, logic-level translation, and power supply enable switching requiring stable component supply and long-term industrial availability.

Supply support for BCR 119T E6327 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and discrete devices, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

BCR 119T E6327 belongs to Infineon's BCR series of digital transistors, engineered specifically for simplified digital interface and switching applications in consumer, industrial, and automotive electronics.

FAQ

Is BCR 119T E6327 pin-compatible with standard SOT-23 NPN transistors?

Yes, BCR 119T E6327 uses the standard SOT-23 pinout (1 = Base, 2 = Emitter, 3 = Collector), matching industry-standard footprints such as BC847, MMBT3904, and PN2222A. However, its integrated base resistor means it cannot be substituted 1:1 without verifying bias network removal in the target circuit.

What is the maximum continuous current this device can switch reliably?

BCR 119T E6327 supports up to 100 mA DC emitter current per datasheet absolute maximum ratings. For sustained operation at 100 mA, PCB copper area must maintain case temperature ≤109 °C; typical design practice limits continuous current to 50–70 mA with 100 mm² 1-oz copper pad for margin.

Does the built-in resistor allow direct connection to 3.3 V logic without additional components?

Yes - with V_i(on) ≤ 1.1 V and R1 = 4.7 kΩ, BCR 119T E6327 turns fully on when driven by 3.3 V CMOS outputs, delivering ≥0.5 mA base current. No series resistor is needed, though a 100 Ω current-limiting resistor may be added for ESD protection in noisy environments.

How does thermal resistance R_thJS = 165 K/W affect PCB layout requirements?

R_thJS = 165 K/W means a 250 mW power dissipation raises junction temperature by 41 °C above solder point temperature. To hold T_j ≤ 150 °C at 85 °C ambient, the solder point must stay ≤ 109 °C - achievable with ≥ 50 mm² exposed copper pad connected to inner ground plane via ≥ four thermal vias.